Pumping system



Patented May 11i, 193@ RACHELLE JAC'ZZI, 0F BmKmaEY, CALIFORNIA.

'rimarrete sas'rm Application led May 9,

Myinvention relates to pumps, and more especially to pumps of thecentrifugal type. An object ofmy invention is to provide a pumpingsystem whereby a centrifugal pump A may be used for dee ywell serviceWithout the necessity of 'insta ling machinery below the ground level. lAnother object is the provision of a pumping system adapted to dischargewater at a pressure higher than the pressure ordinarily obtainable w-iththe pump employed in the system.

Another object of the invention is to provide a pumping system capableof handling 15 water havingv a relatively high content of sand or othersuspended mattelxi Another object is the provision of a deep well pumphaving a low manufacturing cost, and one which is positive anddependable in its operation. My invention possesses other objects and`valuable features, some of which will be set -forth in the followingdescription'of my invention which i's illustrated in the drawingsforming'part of the specification. It is'.to be understood that I do notlimit myself to the showing made by the said description and drawings,as "I may adopt varying forms of mienvention withln the scope of theclaims. ferring to the drawings:

Figure` 1 is an elevation of the pumping system of my invention,together with the connections thereto. Parts are broken away to reducethe length of the gure.

Figure 2-is a diagrammatic longitudinal sectional view of the nozzle andeductor-tube forming a part of my pumping system.

-It is to be understood that the pumping system of my invention may beutilized for 4o pumping any free flowing liquid; but for the presentdiscussion, itwill be sulficient to consider it as'installed for pumpingwater. For-this purpose, a pump preferably of the centrifugal t e,-issuita ly mounted near t the wellor ot er source of supply. Both the1927. "Serial No. 189,809.

intake and discharge pipes lead downwards into the well to a suctionhead, the bottom of which is immersed in the water. Within the suctionhead is an eductor-tube flaring into the intake pipe and opening at itsother end into the suction chamber; and a nozzle forming the terminal ofthe pump discharge pipe, directs its jet at high velocity upwards V thruthe eductor-tube and into the intake pipe,

creating an area of low pressure within the eductor-tube. The suctionhead is provided with a foot valve and strainer to permit the ingress ofwell water at a pressure dependant upon atmospheric pressure plussubmersion pressure. The two streamsV mix within the 6o eductor-tube,where their resultant velocitty head is converted into pressure head sucient to lift the water' up to the pumpthru the intake pipe. A' valveleading from the upper end of the intake pipe provides a low @5 pressuredischarge; but the pressure remainf4 ing -in the intake pipe, lessfriction and eddy losses, is added to the normal pump pressure. Thus, ifthe low pressure discharge `valve is left closed, water may be takenfrom the pumping system at a pressure, much higher than that obtainablewith the pump y connected inthe ordinary manner.

In greater detail, the pumping system of my invention includes a pump 6,preferablyr of the centrifugal type, suitably mounted over a well 7 orother source of supply. Both the discharge, or high pressure pipe 8, andin take, or low pressure pipe 9, lead downwards into the well andterminate in a suction head, 80.

into the upper portion or body 11 of which Geachis threaded. This u perportion 11 is preferably cylindrical ,in orm, with a recess, 12 in'oneside thereof, directly below the' low pressure y through t e lower endof the recess 12 into the pressure chamber 14,*into which the high`pressure pipe 8 leads. Thenozzle is adapted to direct its jetvertically u wards into an 'eductortube,threaded throng the upperend 9opipe 9. A lnozzle 13 is threaded 85 25 A the normal capacity of thepump, because the u of the recess 12. The eductor-tube has a cylindricalbore 16, and a tapering bore 17 ilar-l ing upwards therefrom into thelow ressure y pipe 9 into which the upper end of t e eductor-tubeextends. When water under pressure is forced through the nozzle, thejet, as

when t e pressure is reduced in the eductortube, the well water 19 isforced by atmospheric and submersion pressure through the strainer 21,foot valve 22 and suction cham- `ber 23, into the eductor-tube, Wherethe two streams mix. Here the resultant velocit head is converted intopressure head, whic is capable of lifting the column of water within thelow pressure pipe up to the pump and low pressure discharge 26. Thequantity of water delivered at this point is greater than jet isaugmentedby the water mixed therewith in the eductor-tube. It may thusbe understood that by opening the valve 27, a flow of water may be hadgreater than that obtainable with the pump connected in the ordinarymanner. A portion 28, higher than the pum intake, is included in the lowpressure disc ar e to ensure that all the water is not drained om thesystem, which would result in the pump losing its prime. Whateverressure remains in the pipe 9 1s added to t e ump'pressure, with theresult that when t e low pressure discharge is restricted or closed, thepump delivers Water at a pressure higher than it is normally able to .Adevelop. A high pressure discharge 29, controlled by a valve 31, istherefore provided adjacent the pump discharge. Means for priming thesystem are included, comprising a primary-cup 32 connected by a valve 33into thev high pressure discharge. i

It is readily understood that my pumping system is adaptable to deepwellservice, as the force exerted by the pump is applied atthe bottomof thecolumn of water in the pipe 9 -instead of at the top. The height of thepump above the water line is accordingly not limited to 22 feet, thegreatest practical height to lift water by atmospheric pressure.

' Figure 2 is a diagram showinglwhat I hav found to be the mosteiiicient rela 've positioning of. the nozzle and eductor-tube. lTheahighest degree of vacuum will becreated if the nozzle be so spaced fromthe eductor-tube that an angle of 6 degrees is included between linesdrawn in a plane passing through the common axis of the two members,each of which lines` intersects the tip of the nozzleand the nearestpoint in the circle in which the cylindrical portion and the tapered.portion of the eductor-tube meet. Y

lThe pressure available at either the low or high pressure discharge maybe varied by altering the. size of the eductor-tube or the nozzle. A jetalmost as large in cross section as the cylindrical portion of theeductortube will give a very high pressure, but at a sacrifice involume; whereas a very small jet will deliver much more water at eitherdischarge; but at lower pressure.

I claim:

1. In a pumping system, a pressure head comprising a cylindrical bodyhavin a recessl in'communication with the flui tn be pumped in one sidethereof, a discharge pipe opening into said body, an eductor tubepassing through a portion of said body and terminating in one wall ofsaid recess, and a4 nozzle supplied bysaid discharge pipe inalinementwith and directed into said eductor tube in an opposite wall ofsaid recess.

2. In a pumping system, a pressure head comprising a cylindrical bodyhaving a recess in communication with the fluid to be pumped in one sidethereof, a dischar e pipe opening into said'body, an eductor tu e havinga cylindrical intake and a iiarin dlscharge passing through a portion osaid body and terminating in one wall of said recess, and a nozzlesupplied by said discharge pipe in an opposite wall of said recess anddirected into the intake of said eductor tube. 3. In a pumping system, apressure head comprising a cylindrical body having a recess in one sidethereof, a discharge pipe opening into said body, an eductor tubepassing through a portion ofsaid body and terminating in one wall ofsaid recess, a nozzle supplied by said discharge ipe in alinement withand directed into sai eductor tube in an opposite wall of said recess,and a shell surrounding said body and said recess and having a passagetherethru connectingthe recess With the Huid to be pumped.-

4. In a pumping system, a pressure hea comprising a cylindrical bodyhaving a recess in one side thereof, a discharge pipe/opening into saidbody, an eductor tube' passpumped in one side thereof, a discharge pipeopening into saidl body, an eductor tube having a cylindrical intake anda flarin dis- IGI charge passing through a portion o said.

body and termmating one wall of' said recess, and a nozzle supplied bysaid discharge pipe and havi a flaring once in an opposite wall of sairecess, said eductor tube and orifice bein so disposed that the conicalangle defined y the lips of said orifice and the Junction of the intakeand discharge portions of said eductor tube is of the order of sixdegrees.

In testimony whereof, I have hereunto set my hand. t

RACHELLE J ACUZZ.

